As title really... I have a BSA ESSENCIAL EMD 3-9x40 WR scope (at least that is what is written on the box!) fitted to my .308, is this scope designed for rifles or airguns, and will it be likely to lose its zero mounted to a .308? - the Essential (spelt with a 'T') seems to be BSA's air rifle range, but I cant seem to find any reference to an 'ESSENCIAL' range.
The scope was chosen based on it fitting the 1 inch rings that were available for my Parker Hale rifle and being cheap enought to buy at the same time as the rifle.
Any help would be much appreciated!